Intra-alveolar pressure

Definition

Intra-alveolar pressure is the pressure within the alveoli, the tiny air sacs in the lungs, which fluctuates during the breathing cycle. It plays a critical role in facilitating gas exchange by ensuring that air moves in and out of the lungs efficiently.

Related terms

Alveoli:

Tiny, balloon-like structures in the lungs where gas exchange between air and blood occurs.

Inhalation:

The process of taking air into the lungs, leading to an increase in intra-alveolar volume and a decrease in intra-alveolar pressure compared to atmospheric pressure.

Exhalation:

The process of releasing air from the lungs, resulting in a decrease in intra-alveolar volume and an increase in intra-alveolar pressure relative to atmospheric pressure